Answer:
Expl
Electron: A negatively charged particle found circling or orbiting an atomic nucleus. An electron, like a proton is a charged particle, although opposite in sign, but unlike a proton, an electron has negligible atomic mass. Electrons contribute no atomic mass units to the total atomic weight of an atom.\anation:
which two of the four quantum numbers determine the energy level of an orbital in a multielectron atom?
Answer:
Therefore both Principal quantum number (n) and angular momentum quantum number (1) are responsible to energy level of an orbital in a multi electron atom.
Explanation:
Hope this helps.
how many neutrons are in the stable isotope of rhenium
Properties of Rhenium-185 Isotope:
Properties of Rhenium-185 Isotope: RHENIUM-185
Neutron Number (N) 110
Atomic Number (Z) 75
Mass Number (A) 185
Nucleon Number (A) 185
25 more rows
What type of front is depicted here?
Cold
Warm
Sationary
Occluded
Warm
Explanation:
The warm air is going against the cold
A block of material has a density of 1.29 g/cm. what is the volume of 190 g in cubic
centimeters?
No units required
Answer:
147.28 cm³
Explanation:
Density = m/V
1.29 g = 190 g/cm3/V
V = 190 g/cm³ : 1.29 g
V = 147.28 cm³
what is the molar mass of dimethylglyoxime, c4h8n2o2?
Answer: 116.12 g/mol
Explanation:
The molecular mass of a formula unit of dimethylglyoxime is calculated as 116 g/mol.
What is molecular mass?The molecular mass can be given as the sum of the mass of each element in the formula unit of the compound.
The dimethylglyoxime is the compound with molecular formula, [tex]\rm C_4H_8N_2O_2[/tex].
The mass of each element in the compound is:
Carbon = 12 gramsHydrogen = 1 gramsNitrogen = 14 gramsOxygen = 16 gramsSubstituting the mass in the formula unit of the compound as:
[tex]\rm C_4H_8N_2O_2=4(carbon)+8(hydrogen)+2(nitrogen)+2(oxygen)\\ C_4H_8N_2O_2=4(12)+8(1)+2(14)+2(16)g\\ C_4H_8N_2O_2=116\;g[/tex]
The molecular mass of dimethylglyoxime is 116 g/mol.
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How do you know where something fits on the electromagnetic spectrum? I currently have the Hz but do I need to convert that into something else?
Elements in the same period have the same…
Answer:
Elements in the same period have the same (number of electron shells)
Copper has two naturally occurring isotopes: Cu-63 with mass 62.9395 amu and a natural abundance of 69.17% and Cu-65 with mass 64.9278 amu and a natural abundance of 30.83%. Calculate the atomic mass of copper.
Answer
63.55
Explanation:
63
C
u
has
69.2
%
abundance.
65
C
u
has
30.8
%
abundance.
So, the weighted average is
62.93
×
69.2
%
+
64.93
×
30.8
%
I will brainless who can answer this all pleaseeeeej
Answer:
Red, Orange. Yellow, Green, Blue, Indigo, and Violet.
Explanation:
the answer is the colors of the rainbow
who is generally called the father of modern chemistry
Explanation:
Antoine Lavoisier is the answer
Answer:
Antoine Lavoisier is the father of chemistry
Explanation:
Antoine-Laurent de Lavoisier, also Antoine Lavoisier after the French Revolution, was a French nobleman and chemist who was central to the 18th-century chemical revolution and who had a large influence on both the history of chemistry and the history of biology.
calcium, strontium and barium are all located in the same column of the periodic table. why is that?
Calcium (Ca), strontium (Sr), and barium (Ba) are all located in the same column of the periodic table because they have similar atomic structure and similar chemical properties
Periodic tableFrom the question, we are to determine why calcium (Ca), strontium (Sr) and barium (Ba) are all located in the same column of the periodic table
The periodic table is a tabular arrangement of chemical elements that is arranged by increasing atomic number and groups elements according to recurring properties.
Elements with similar atomic structure and similar chemical properties appear in the vertical columns. These columns are called groups.
Hence, calcium (Ca), strontium (Sr), and barium (Ba) are all located in the same column of the periodic table because they have similar atomic structure and similar chemical properties
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Sabrías citar al menos tres elementos gaseosos en estado natural
Answer:
a change in the level of consumer income
Explanation:
Which of the cells shown is a prokaryote?
A) muscle cell B) nerve cell C) bacterium D) red blood cell
A. IH, III, IV
C. I, II and IV only
B. I, ll and Ill only
D. III and IV only
2. A liquid has the following properties: one-phase, colorless, boils at varying
temperature. Which of the following BEST describes the liquid?
A. solution
C. suspension
B. substance
D. heterogeneous mixture
3. Jill has an unopened box of a 2-meter foil labeled as 100% aluminum. Jill takes just a
thumb-sized piece of the aluminum foil. Which of the following statement is TRUE
about the piece of aluminum foil that Jill took compared with the rest that was left in
the box?
A. Its mass and melting behavior are different.
Bits mass and melting behavior are the same.
C. The mass is different, but the melting behavior is the same.
D. The mass is the same, but the melting behavior is different.
Answer:
2. A. solution
3. C The mass is different, but the melting behavior is the same
what is the molar mass of dimethylglyoxime, c4h8n2o2?
Explanation:
The molar mass of a compound can be calculated by finding the molar of the individual atoms that combine to make the compound.
Molar mass of compound =
∑ (molar mass of element × number of atoms of the element)
∴ Molar mass of dimethylglyoxime
= 4C + 8H + 2N + 2O
= [(4 × 12.011) + (8 × 1.0080) + (2 × 14.007) + (2 × 15.999)] g/mol
= 116.12 g/mol
∴ the molar mass of dimethylglyoxime = 116.12 g/mol3. How does
photosynthesis affect
your daily life?
Answer:
to create oxygen and energy in the form of sugar
Explanation:
photosynthesis is the process by which plants use sunlight, water, and carbon dioxide
The best way to get the sugar out of a sugar-water solution is to __________.
Answer:
Distillation is the process by which sugar can be separated from the sugar solution.
Explanation:
Distillation, or classical distillation, is the process of separating the components or substances from a liquid mixture by using selective boiling and condensation.
Answer:
Boil the water, this would cause the water to evaporate and will leave behind the sugar crystals, which is known as distillation.
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Pretest: Chemical Reactions
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Which coefficient of O, is needed to balance the equation C3Hg+ 02 - 3C02 + 4H2O?
OA. 2
OB. 3
O c. 5
OD 6
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The coefficient of oxygen is five which is needed to balance the given chemical equation and equation is C₃H₈ +5 O₂[tex]\rightarrow[/tex] 3 CO₂ +4 H₂O.
Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
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3. A sample of carbon has a mass of
0.000000000000000-0034 kg. Express
this mass in scientific notation.
[tex] - 34 {}^{15} [/tex]
The power of -34 will be 15 because 15 zeroes are given....I'll mark brainly pls help
1. A sample of nitrogen occupies a volume of 250 mL
at 298 K. What volume will it occupy at 268 K?
Answer:
0.225 L = 225 mL
Explanation:
Charles' Law states that for a fixed pressure, the volume is directly proportional to the temperature, which means things expand at the same rate as the rate of it being heated up
Mathematically, we can write that as:
V1/T1 = V2/T2, where 1 and 2 are the two situations
So, when we substitute the values in, we get:
0.25 L/298 K = V2/268 K
Rearranging this, we get:
(0.25/298) x 268 = 0.225 L = 225 mL.
This also makes sense, as the volume reduced a little when the temperature reduced (cooled down)
Let me know if this makes sense, and hope I helped! :)
phenolphthalein is used as a visual indicator in a strong acid-strong base titration because
The pH range of phenolphthalein is 8.3 - 10.0, which is suitable with the pH range of Strong Acid and Strong base titration and so phenolphthalein is used as a visual indicator in a strong acid-strong base titration.
What is an Indicator ?Any substance that gives a clear visible indication of the presence or absence of a particular concentration of a chemical species, such as an acid or an alkali in a solution, usually by a colour change.
The pH range of Strong Acid and Strong base titration is 3–11 and equivalent point is at 7
the pH range of Strong Acid and Weak base titration, is 3–8 and equivalent point is below 7
the pH range of Weak Acid and Strong base titration, is 6 - 11 and equivalent point is above 7
So for titration , an indicator with suitable pH range is used
The pH range of phenolphthalein is 8.3 - 10.0.
Therefore phenolphthalein is used as a visual indicator in a strong acid-strong base titration.
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Describe the journey that a carbon atom inside a fossil fuel will take to become a carbon atom inside a plant
When fossil fuels are burnt, CO2 is released into the air and is taken up by plants during photosynthesis to form glucose and subsequently starch.
Fossil fuels contain a large proportion of carbon atoms. When fossil fuels are burnt, these carbon atoms are released as carbon dioxide and escape to the atmosphere as atmospheric CO2 in air.
Recall that plants take up the CO2 in air during the process of photosynthesis. This CO2 becomes combined with water in the presence of sunlight to form glucose.
This glucose is converted to starch and stored in plant tissues. This is how the carbon atom inside a fossil fuel becomes a carbon atom inside a plant.
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What is it like on Mars? Please type 6 good answers.
the temperature at which a liquid becomes a gas is called the
Studying the brightness of a star can help scientist determine what part of the life-cycle a star is in. Is this true or false
Answer:
what do you mean?
Explanation:
Studying the brightness of a star can indeed help scientists determine what part of the life-cycle a star is in. The brightness of a star is directly related to its stage in the life cycle.The statement is true.
During the early stages of a star's life, it is formed from a cloud of gas and dust. As the star contracts under its own gravity, it starts to heat up and emits light. This is known as the protostar stage.
As the star continues to contract, it reaches a point where the core temperature becomes hot enough for nuclear fusion to occur. At this stage, the star enters the main sequence phase, where it will spend the majority of its life. The brightness of the star in this phase is determined by its mass. More massive stars are brighter than less massive ones.
As the star ages, it exhausts its hydrogen fuel in the core and begins to evolve. Depending on its mass, a star can become a red giant, a white dwarf, a neutron star, or even a black hole. Each of these stages has a different brightness profile.
By observing the brightness of a star over time, scientists can gather information about its age, mass, and evolutionary stage. This can provide insights into the star's life cycle and help in understanding the processes occurring within it.
Thus, studying the brightness of a star is an important tool for scientists to determine what part of the life cycle a star is in. By analyzing its brightness profile, scientists can gain valuable information about the star's age, mass, and evolutionary stage.The statement is true.
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List 5 physical properties of matter. How many atoms of each type of element in C6H12O6?
what are the conditions from our notes that affect natural Selection?
Answer:
Conditions that affect natural selection are reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
what is the relationship between temperature and pressure pls
Answer:
When the temperature of a system goes up, the pressure also goes up, and vice versa. The relationship between pressure and temperature of a gas is stated by the Gay-Lussac's law.
Answer:
We find that temperature and pressure are linearly related, and if the temperature is on the kelvin scale, then P and T are directly proportional (again, when volume and moles of gas are held constant); if the temperature on the kelvin scale increases by a certain factor, the gas pressure increases by the same factor.
what do you think life on earth will be like if chemistry had not been put to practical use
Explanation:
Archaism
Things on Earth would be unexplainable